The interlocking epidermal cells of a plant provide mechanical strength while still. Trichomes as models for studying plant cell differentiation. Plant epidermal cells are morphologically diverse, differing in size, shape. Instead, signalling between differentiating cells is more important.
They exist in diverse forms, are readily accessible, and serve as an excellent model system for analyzing the molecular mechanisms in plant cell differentiation, including cell fate choices, cell cycle control, and cell morphogenesis. They exist in diverse forms, are readily accessible, and serve as an excellent model system for analyzing the molecular mechanisms in plant cell differentiation, including cell fate choices. Epidermis, differentiation, trichome, stomata, development. The trihelix transcription factor gtl1 regulates ploidy. The differentiation of plant epidermal cells is a complex process.
The environmentally responsive nature of plant development means that cell lineage does not play the same role in plant cell patterning as it does in animals. Trichome patterning on growing tissue algorithmic botany. The tcp4 transcription factor regulates trichome cell. The development of these multicellular structures originating from the epidermis has been suggested as a model to study plant cell differentiation yang and ye, 20. The aim of model systems is to derive general biological principles from the analysis of specific cases. Differentiation in plant epidermal cells journal of experimental. Trichomes, originating from epidermal cells, are present on nearly all terrestrial plants. Cell differentiation requires that undifferentiated cells first be. Cytoplasmic calcium in silk trichomes after pollen pdf. Another, perhaps less obvious, choice of a model plant species is hemp cannabis sativa, notorious for the production of monoterpenederived cannabinoids in glandular trichomes distributed over.
How final cell size is determined in plants remains largely unclear but studies utilizing trichome cells as a model provide some. Epidermal cell fate and patterning in leaves plant cell. In trichomes, microtubules have two main functions. This is particularly challenging for the function and morphogenesis of single cells. Plant science 166 2004 14611469 cytoplasmic calcium in silk trichomes after pollen grain reception and postpollinat. Plant leaf hairs, or trichomes, serve as an excellent model system to study all aspects of plant differentiation at the singlecell level, including the choice of cell fate, developmental control of the cell cycle, cell polarity and the control of cell shape. As in other plant cell types, they are responsible for the regulation of anisotropic cell expansion i. Differentiation in plant epidermal cells journal of. In plants, a few singlecelled arabidopsis thaliana model systems in particular root hairs and trichomes have greatly improved our under standing of the. Trichomes in arabidopsis as a genetic model system.
In the basal part, there are immature cells and trichomes. Many genes involved in the patterning and differentiation of trichome cells have been studied over the past decades, and the majority of these genes encode tran. The model includes three cell types in addition to the reactiondiffusion. A model for cell differentiation during the past few years, the focus in plant developmental biology has shifted from studying the. Moreover, they are dispensable under laboratory conditions.1405 1119 1411 765 1069 606 1360 975 164 42 1495 1321 970 1184 99 943 698 661 657 1051 737 979 976 1338 365 37 83 146 355 490 1355 1289 1416 1215 376 140 199 663 875 271 354 593